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Add support for BGMode3 (tonc first.gba example now working)

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Former-commit-id: 52ac773ee2c3542ff3b046c3ea33fde02e804492
This commit is contained in:
Michel Heily 2019-07-22 00:09:44 +03:00
parent 7e9c0e31da
commit 387e26fad9
1 changed files with 13 additions and 0 deletions
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13
src/core/gpu.rs
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@ -309,6 +309,16 @@ impl Gpu {
} }
} }
fn scanline_mode3(&mut self, bg: u32, sb: &mut SysBus) {
let y = self.current_scanline;
for x in 0..Self::DISPLAY_WIDTH {
let pixel_index = x + y * Self::DISPLAY_WIDTH;
let pixel_addr = 0x0600_0000 + 2 * (pixel_index as u32);
self.pixeldata[x + y * 512] = sb.read_16(pixel_addr).into();
}
}
fn scanline_mode4(&mut self, bg: u32, dispcnt: &DisplayControl, sysbus: &mut SysBus) { fn scanline_mode4(&mut self, bg: u32, dispcnt: &DisplayControl, sysbus: &mut SysBus) {
let page: u32 = match dispcnt.display_frame { let page: u32 = match dispcnt.display_frame {
0 => 0x0600_0000, 0 => 0x0600_0000,
@ -337,6 +347,9 @@ impl Gpu {
} }
} }
} }
BGMode::BGMode3 => {
self.scanline_mode3(2, sysbus);
}
BGMode::BGMode4 => { BGMode::BGMode4 => {
self.scanline_mode4(2, &dispcnt, sysbus); self.scanline_mode4(2, &dispcnt, sysbus);
} }